... drying• Vapour permeable OVERVIEWHandycoat Interior is a ready- to- use filler and board jointing compound for most building ... permeableAREAS OF USEWhen dry, Handycoat Interior bonds extremely well to cementitious materials, gypsum, gypsum boards, sprayplasters, wood, ... for patching hairline cracks in walls, ceilings, repairing damage to plaster/paint work, nail holes in woodwork, making good ...